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Notice: If you haven’t yet updated to 2.4.19 – please do so now as previous releases contain known vulnerabilities.

easyXDM is a Javascript library that enables you as a developer to easily work around the limitation set in place by the Same Origin Policy, in turn making it easy to communicate and expose javascript API’s across domain boundaries.

How easyXDM works

At the core easyXDM provides a transport stack capable of passing string based messages between two windows, a consumer (the main document) and a provider (a document included using an iframe). It does this by using one of several available techniques, always selecting the most efficient one for the current browser.
For all implementations the transport stack offers bi-directionality, reliability, queueing and sender-verification.

Using JavaScript only (no Flash, Silverlight, extra html files etc) easyXDM provides the following browsers with stacks with latency of less than 15ms: